The potential for the ultracompact combustor (UCC) lie in future research to reduced fuel consumption and improved engine\r\nperformance. Velocity measurements performed on the UCC test rig at the Air Force Institute of Technology revealed flow patterns\r\nand time-averaged turbulence statistics for data taken burning hydrogen fuel in a straight and a curved cavity vane configuration.\r\nOver an equivalence ratio from 0.7 to 1.5, the straight vane configuration showed spanwise velocity decreased linearly with distance\r\nfrom the cavity vane over the width of the main channel. Increasing the flow rates and holding the equivalence ratio and ratio of\r\ncavity to main airflow rates constant, flow velocities in the main channel showed an increase with the curved circumferential\r\nconfiguration but a decrease with the straight circumferential configuration. Turbulence intensity is expected to be a major\r\ncontributing factor, specifically since measured at 15% and 21% in the main channel for the straight and curved configurations,\r\nrespectively. The results also show how the radial vane cavity (RVC) created strong vorticity throughout the main flow supporting\r\na recirculation zone for mixing. Peak vorticity occurred farthest from the cavity vane suggesting the angle of the radial vane cavity\r\nis effective in generating increasing flow rotation.
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